assn10 - Homework 10 1.264, Fall 2006 Communications, and...

Homework 10 1.264, Fall 2006 Communications, and software process Due: Thursday, December 7 A. Communications Your chemical manufacturing Web ordering system is planned for implementation in 9 months, after three more spirals with a larger team. You’ve been asked to design the communications network to support the system. The staff that will be placing orders is: • 25 users in Houston, TX • 20 users in Newark, New Jersey • 10 users in Detroit, MI • 10 users in Los Angeles, CA • The users above are employees of a chemical broker who acts as an intermediary and consolidator; the employees work from offices at these sites. Mobile and offsite use is minimal. • All the offices above are within 3 miles of a telephone central office. They are all served by LEC and CATV carriers offering point to point T1, DSL, MAN Ethernet, cable modem and frame relay services • Customers place about 3,000 orders per day • 10% of the orders are entered directly through the Web site • 90% are entered by brokers; the customer has phoned, faxed or emailed information to the broker, who consolidate orders, arrange shipping and insurance, negotiate freight rates, and “guarantee” lowest delivered prices The servers will be located in the New Orleans, LA headquarters of your company, which has a connection to the Internet to handle orders entered directly through the Web site. You

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